Google is challenging a record €4.3 billion fine imposed by the European Commission for allegedly abusing its dominant market position through its Android operating system. The case, which began in 2015, centers on Google's practices of requiring smartphone manufacturers to preinstall Google Search and Google Chrome in order to access the Play Store. The European Court of Justice (ECJ) is currently hearing Google's appeal against a 2022 ruling by the General Court that upheld the fine, albeit reducing it to €4.125 billion from an initial €4.343 billion imposed in 2018. Google argues that the European Commission made 'grave errors' in its investigation, claiming that Android's success stems from innovation rather than market abuse. The European Commission, however, insists that Google's practices restricted competition and is defending the fine. This is one of several antitrust cases against Google, including a €2.424 billion fine related to Google Shopping and an ongoing investigation into its adtech services.